Improvement in illuminating apparatus for bakers  ovens



. A. MEI-ER--a P.- BEURER,v ILLUMINATING,'APPARATUS Fon BAKERS ovENsQ-No, 177,53@ Patented my v1es, 187e.

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the lamp-case, as shown, but not attached' yiivrrn'in STATES FFICE.

ANTON MEIER AND. PETER DEUKER, OF NEW YORKN. Y.

IMPROVEMENT IN lLLUMlNATING APPARATUS FOR BAKERS OVENS.

Specification forming part of Letters Patent No. 177,533, dated May 16,v1876; application filed April 29, 1876. 4

10 all whom it may concern Be it known that we, ANTON MEIER and PETERDEUKER, both of the city, county, and State of New York, have jointlyinvented certain Improvements in Illuminating Apparatus for Ovens, ofwhich the following is a specification:

This invention relates to a device for' illumi-A nating the interior ofbakers7 ovens, the object being to throw a bright Ilight to the farthestinnermost recesses of the oven during the baking, or at any other time,the source of light being invisible to the person inspecting theinterior of the oven, but entirely under control.,

' In the drawings, Figure l isa longitudinal vertical mid-section on alarge scale, illustrating our invention. Fig. 2 is a perspective view ofthe lamp-case; and Fig. 3 is a horizontal section through the front walloi' the oven, showing the relative positions of the illuminating'apparatus and the oven-door. j

Let A represent the interior of an oven 5 B, the front wall ofthe same;and C, the door or door-opening, all o` which mayrbe'constructed in theusual way.

In the front wall B, and as near the door as convenient, .is built arectangular cast-iron frame, D, to bound an aperture, E, which extendsthrough the wall. To this frame is titted a shut-oft' slide, F, whichplays in grooves in the flanges of the frame .D, and which may beconveniently operated through the oveni door C. The opening E may beasclose to the oven-door as shown in Fig. 3, but not so close that theslide F, when drawn out, will interfere with the passageofarticlesthrongh the oven-door. G is a lamp-case, arranged to slidefreely into the aperture E, and rest against atlange of the frame D, soas to prevent the escape of hot air from the oven.

This case may be made ot' sheet-iron, and itslide in vertical grooves inthe case, so as to' be readily removable-.for cleaning, as shown H isanordinary lamp, to set in thereto. A stop, b, is provided toipreventthe lainp being pushed too far forward. The lamp is provided with anadjustable rellector, I, mounted on a vertical spiud1e,o, attached tothe lamp body orhandle, and having its focus arranged to properlyconcentrate and reect the rays from the burner. When the oven is to beheatedfor baking, the slide F is pushed in so as to cut ott or closeth'e aperture, so that no heat may escape. The lampcase may be takenout, the lamp cleaned and got ready, and the glass front a removed andwiped oft'. When the oven is ready for baking the case is pushed intothe opening E as far as it will go, and the lamp lighted and put iu it.The slide F may now be drawn back, and' the glass front, while itprevents any escape of heat lfrom the oven, will permit the reiiector tothrow a bright light into thefarthest recesses of the same. By turningthe reflector on its spindle by mea-ns of the arm d, the light may bedirected to any point, as desired. A lamp is most convenient,

but agas-burner, provided with a stand and a flexible tube, might beused. For the glass front ct we prefer to use a piece of thick Frenchplate, but a plate tempered by the Bastie process \vould answer verywell. The lamp should havefa chimney of the same material, so that bothmay be the better able to withstand vthe heat from the oven.

In the ordinary way of illuminating ovens the baker throws open thedoor, and introduces a burner or hand lamp. The light being necessarilyvisible, and between him and the interior of theoven, he is partiallyblinded by the glare, and the steam arising from the baking breadprevents the rays of light from penetrating to the extreme depth of' theoven. Moreover, he is compelled to throw the door wide open, and muchheat is lost.

Our device completely obviates these deout for cleaning. The lamp mayalso be readily removed, and the reflector taken off for cleaning orpolishing.

Having thus described our invention, what The lamp-case is readily'removed, and the glass front taken.

we claim as new, and desire to secure by Let-V rect the reected rays toany part of the oven desired, when arranged to operate as and for thepurposes set forth.

In witness whereof we have hereunto signed our names'in the presenee'oi'two subscribing witnesses.

ANTON-MEIER.

l PETER DEUKER. l

'Witnesses:

HENRY GONNETT,

ARTHUR C. FRASER.

